Means for heating gases.



J. WEBER.

MEANS FOR HEATING GASES. APPLICATION FILED MAR. I3, 1916.

1,203,944. Patented Nov. 7,1916.

8 nvewtoz JOSBF wtata JOSEF WEBER, OF ESSEN-ON-THE-BUHR, GERMANY.

MEANS FOR HEATING GASES.

Specification of Letters Patent.

Patented Nov. 7, 1916.

Application filed larch 1:, me. Serial No. scams.

7 all whom may concern f Be it known that I, Josnr VEBER, doctor of clu-smistry, citizen of the German Empire,

resiiling at llsscn-oirtheRuhr, Gcnmany,

have im'cnted. a new and useful Means for Heating Gases; and I do hereby declare the following to be a full, clear, and exact description of the same.

Various means or apparatus have been 10 proposed for heating or cooling gases by means of previously'heatcd or cooled solid bodies.

My invention refers to that type of heating means or devices in which the gases are passed through streams of finely divided solid bodies or particles, such as sand or other finely granular material. However, all of same, as proposed u to now, show the heavy drawbacks that t e sand does not come in contact with the gases but on the surface of relatively large masses or heaps andthat a great number of perforated plates, brickwork or the like, guiding tubes or passages for the sand, etc.. were to be provided. According to my invention all these drawbacks are avoided, the transmission of heat-of the waste. furnace or producer or other heating gases being realized to the utmost and without complicated and expensive constructions.

The essential feature of my method consists in causing the finely divided solid particlcs previously heated to form large and thin or veil-like layers or surfaces which come in contact with the gases on the whole of their extension.

This method may be carried into practice in various ways. For instance, a. rotary vessel or drum, preferably inclined, may be supplied at its inner walls with'teeth or promotions which, bearing the sand or other solid particles upward, distribute part of it and after having passed the vertical line let. fall. the rest and thereby distribute the sand over the whole section of the yessel. The gases which are conducted through the vessel in'a longitudinal direction are forced to penetrate the veil-like layers formed by the sand falling down during to rotation and thereby to come in intimate contact with the sand on large surfaces. In

this manner the quick and thorough transmission of heat is realized between the solid particles and the gaseainsuch a. .way that u for hot producer gases which 'as' above descrihedpass through a rotary vessel give up their caloric contents to a. temperature of less than 100 degrees centigrade.

Instead of teeth or projections there may of course housed other means for conveymg or raising the sand up to the vertical line, as for instance recesses or furrows or the like. All these means are preferably arranged at the inner walls of the drums' in a helix form in such a way that during rotation a continuous strewing of sand is secured over the whole section of the drum and thereby a series of thin layers or veils of the solid particles is pro need which come in contact with the gases introduced.-

If a gas is to be heated by another gas (furnace or producer gas) without bringingthe gases in contact with each other this may be effected with the aid of finely divided solid particles according. to the invention in the following manner: Two rotary vessels ordrums of the type as described above are arranged in such a way that the gases which passed the one vessel cannot enter the other drum. For instance this may be realized by providing in the partition-wall between the two drums a rotary cylinder or roller made of refractory material such as fire-clay and suppliedwith segments or means for bearin the sand, etc. The drums are' preferab y inclined and provided with conduits for introducingzind drawing off the gases.

In the drawing, the figure is a longitudinal \ertical section of an apparatus embodying the invention.

The apparatus comprises two rotary vcssels or drums in accordance with the invention. -The solidparticles such as sand (or fire-clay, magnesia, zirconium earth or the 96 like in granular or pulverized form) are introduced by means of a hopper or other known device d intothe rotating drum a and are heated by contact with the gases such as waste furnace or producer gas en'- tering at b and leaving the apparatus through the passage 0. The hot sand after j having passed the drum in the shape of numerous thin, veil-like layers falls into the recesses or segments 'e of the roller D and therefrom through a hopper-like device f into the second drum G. Into this vessel the gases to be heated enter at I; and are drawn ofi by the tubei. The cooled sand is collected at I: and then again conveyed by tig 'tion of humidity existing in ceivcd by the res per chambers, w

elevutors'or similar. devices to the top of the upper drum into which it is introduced again at d.

It stands to reason that this method and apparatus can also be advantageously employed if it is desired to cool gases,

It may be remarked that in the apparatus of the type described it has been found advantageous to provide a, supplementary heating device near to the outlet for the cooled heatinggases in order to-preheat to a certain degree the sand entering the chamber. Thereby a condensation or precipitathe gas (for instance producer gas) is avoided which eventually would cause the sand to-con lomerate and to choke the openings for c larg- What I claim as my invention and desire to secure by Letters atent is:

1. In means for heating gases, the combination of a pair of furnace heads each comprising an upper and a lower chamber each chamber, having an opening therein; a pair of oppositely inclined rotary drums disposed one above the other converging toward each other,'the ends ofthe upper drum being rective openings ofthe upile the ends of the lower by the corresponding lower openings; gas conduits entering the respective chambers; a substantially gast seal between the chambers at the con- .verging ends of the drums; and means for feeding solid particles to the upper drum.

drum are received 2. In means for beating gases,-tlie combination of a pair of furnace heads each comprising an upper and a lower chamber each chamber having an opening therein; a pair of oppositely inclined rotary drums disposed one above the other converging to ward each other, the ends of the upper drum being received by the respectiveopenings of the upper chambers, while the ends 0 the lower drum are received by the corresponding lower openings; gas -conduits entering the respective chambers; a valve roller havin recesses therein disposed between the chambers at the diverging end of the drums.

3. In means for heating gases, the combination of a pair of furnace heads each comprising an upper and a lower chamber each chamber having an opening therein; a pair of oppositel inclined rotary drums disposed one above the other converging toward each other, the ends of the upper drum being received by the re. tive openings 0 the upper chambers. while the ends of the lower drum are received by the correspond ing lohver openings; gas conduitscntering the respective chambers; a substantially gas-tight seal betweenthe chambers at the converging ends of the drums; means for feeding solid particles to the upper drum and projections on the inner face of the drums. 4

In testimony '\vhereof,,I have signed my name to this specification in the presence of two subscribing witnesses.

Hams Norma, Aanrrrr Nona. 

